Seven-layer composite umbrella cloth and manufacturing process thereof

Abstract

The invention relates to the technical field of textile materials, and discloses a seven-layer composite umbrella cloth and a manufacturing process thereof, the cloth is composed of a waterproof glue layer, a 30D ultrathin cloth layer, four black glue layers and a feather shield heat insulation skin feeling glue layer, and the layers are tightly attached through a molecular recombination process. The manufacturing process comprises the steps of substrate plasma pretreatment, waterproof glue coating and drying, black glue four-time blade coating-drying, feather shield heat insulation skin feeling glue preparation, hot-pressing compounding, ultrasonic molecule recombination and after-treatment. The total thickness of the fabric is 0.25 mm and is reduced by 15%-20% compared with similar products, the infrared reflectivity is 92%, the heat shielding rate is 85%, the UPF value is 50 +, the contact angle is 20, the moisture permeability is 5000g / m * 24h, the interlayer peel strength is 3.5 N / 5cm, the fabric can be washed for 50 times, and the fabric has the characteristics of light weight, efficient heat insulation, strong ultraviolet prevention, skin friendliness, comfort, stability and durability, and is suitable for sun-proof, heat-insulation and ultraviolet-proof functional products such as sun-proof umbrellas and sun-proof clothes.

Description

Technical Field

[0001] This invention relates to the field of textile materials technology, specifically to a seven-layer composite umbrella fabric and its manufacturing process. Background Technology

[0002] Traditional umbrella fabrics often employ single-layer or low-layer composite structures, resulting in poor heat insulation, heavy weight, and insufficient UV protection. Current 30D black-coated fabrics typically have a five-layer structure (e.g., waterproof adhesive + 30D ultra-thin fabric + three layers of black adhesive), offering basic heat insulation, but there is still room for improvement in lightweight design, heat insulation efficiency, and UV protection. Furthermore, conventional fabrics lack the ergonomic comfort of skin-friendly designs, making it difficult to simultaneously meet the needs for sun protection, lightweight design, and a pleasant feel. Summary of the Invention

[0003] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a seven-layer composite umbrella fabric and its manufacturing process, thus solving the problems mentioned in the background section.

[0004] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a seven-layer composite umbrella fabric, comprising a waterproof adhesive layer, a 30D ultra-thin fabric layer disposed above the waterproof adhesive layer, four black adhesive layers disposed above the 30D ultra-thin fabric layer, and a feather shield heat-insulating skin-feeling adhesive layer disposed above the uppermost black adhesive layer.

[0005] Preferably, the waterproof adhesive layer is made of environmentally friendly polyurethane waterproof adhesive material with a thickness of 0.02-0.03 mm.

[0006] Preferably, the 30D ultra-thin fabric layer has a thickness of 0.05-0.06mm and a density of 120D*120D.

[0007] Preferably, the thickness of each of the four black adhesive layers is 0.01-0.02 mm, and they are made of nano-sized carbon black particles and polymer composites.

[0008] Preferably, the thickness of the Feather Shield heat-insulating skin-feel adhesive layer is 0.03-0.04 mm, and it contains ceramic microcapsules with a particle size of 0.5-1 μm and a skin-friendly softener.

[0009] Preferably, the skin-friendly softener is polydimethylsiloxane.

[0010] Preferably, the waterproof adhesive layer, the 30D ultra-thin fabric layer, the four layers of black adhesive layer and the feather shield heat-insulating skin-feel adhesive layer are tightly bonded between the layers through a molecular recombination process, forming hydrogen bonds and van der Waals forces between the layers.

[0011] Preferably, the seven-layer composite umbrella fabric is suitable for sunshade umbrellas, sun-protective clothing, and other products with sun protection, heat insulation, and UV protection functions.

[0012] This invention further provides a manufacturing process for a seven-layer composite umbrella fabric, comprising the following steps: Step 1: Substrate pretreatment: The 30D ultrathin fabric is treated with plasma to improve its surface activity; Step 2: Waterproof adhesive application: Apply waterproof adhesive evenly to the bottom layer of 30D ultra-thin fabric and allow it to dry and set. Step 3, multi-layer lamination of black glue: Four layers of black glue are formed by a four-times scraping and drying process. The drying temperature of each layer is 120-140℃ and the time is 3-5 minutes. Step 4: Preparation of Feather Shield Heat Insulation Skin-Feel Gel: Ceramic microcapsules, skin-friendly softener and polyurethane resin are mixed and formed into a uniform colloid through a high-speed dispersion mechanism; Step 5, Surface Layer Composite and Molecular Reorganization: Apply Feather Shield Heat Insulation Skin-Feel Adhesive to the surface of the black adhesive layer, and perform hot-press composite at 80-100℃. At the same time, reorganize the molecular structure through ultrasonic vibration. Step 6, Finishing: After shaping, cooling, and rolling, the finished fabric is obtained.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a seven-layer composite umbrella fabric and its manufacturing process, which has the following beneficial effects: 1. This seven-layer composite umbrella fabric and its manufacturing process reduce redundant materials between layers through molecular recombination, controlling the total fabric thickness to within 0.25mm and the weight to 80g / m², which is 15%-20% lighter than similar five-layer 30D black rubber fabric, making it easier to carry and contributing to the lightweight design of the product. At the same time, this process enables hydrogen bonds and van der Waals forces to be formed between the molecules of each layer, resulting in an interlayer peel strength of 3.5N / 5cm and a water resistance of 50 washes. It can maintain stable performance even after multiple uses, extending the product's service life.

[0014] 2. This seven-layer composite umbrella fabric and its manufacturing process, through the synergistic effect of four layers of black adhesive and a feather-shield heat-insulating skin-feel adhesive layer, achieves an infrared reflectivity of 92% and a heat-blocking rate of over 85%. A 40-minute sun-lit test verified that umbrellas using this fabric can reduce the human head temperature from 50℃ to 28.5℃, a temperature reduction of 21.5℃, effectively coping with high-temperature environments. The composite structure and special material formula give the fabric a UPF value of 50+ and an ultraviolet transmittance of <0.1%, superior to traditional five-layer black adhesive fabric (UPF40+), effectively blocking harmful UVA and UVB rays.

[0015] 3. The seven-layer composite umbrella fabric and its manufacturing process, through the use of a heat-insulating and skin-friendly adhesive layer containing skin-friendly softeners such as polydimethylsiloxane, and a fabric contact angle of 20°, make it as soft as suede, meeting the needs of ergonomic design; at the same time, the fabric has a moisture permeability of 5000g / m*24h, which can keep the skin dry for a long time and improve the comfort of long-term use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram illustrating the soft and skin-friendly properties of the present invention; Figure 3 This is a schematic diagram of the thermal imaging experiment of the present invention.

[0017] In the picture: 1. Waterproof adhesive layer; 2. 30D ultra-thin fabric layer; 3. Black adhesive layer; 4. Feather shield heat insulation skin-feel adhesive layer. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-3 The present invention provides a technical solution: a seven-layer composite umbrella fabric, including a waterproof adhesive layer 1, a 30D ultra-thin fabric layer 2 above the waterproof adhesive layer 1, four black adhesive layers 3 above the 30D ultra-thin fabric layer 2, and a feather shield heat-insulating skin-feeling adhesive layer 4 above the uppermost black adhesive layer 3.

[0020] In this invention, in order to achieve basic waterproofing and enhance the toughness of the fabric, the waterproof adhesive layer 1 is made of environmentally friendly polyurethane waterproof adhesive material, and the thickness is controlled between 0.02-0.03mm.

[0021] In this invention, in order to balance the lightweight and tensile strength of the fabric, the thickness of the 30D ultra-thin fabric layer 2 is set to 0.05-0.06mm, and the density is 120D*120D.

[0022] In this invention, in order to enhance infrared reflectivity through multi-layer stacking, all four black glue layers 3 are designed as a composite material of nano-sized carbon black particles and polymers, with each layer having a thickness of 0.01-0.02 mm.

[0023] In this invention, in order to make the fabric have heat insulation, skin-friendly and quick-drying properties, ceramic microcapsules with a particle size of 0.5-1m and a skin-friendly softener are added to the Feather Shield heat insulation skin-feel adhesive layer 4, and the thickness is controlled at 0.03-0.04mm.

[0024] In this invention, in order to improve the skin-friendly effect of the Feather Shield heat insulation skin-feel adhesive layer 4, polydimethylsiloxane is selected as the skin-friendly softener for this layer.

[0025] In this invention, in order to reduce the interlayer porosity and achieve tight interlayer bonding, a molecular recombination process is used to form hydrogen bonds and van der Waals forces between the molecules of the waterproof adhesive layer 1, the 30D ultra-thin cloth layer 2, the four-layer black adhesive layer 3, and the feather shield heat-insulating skin-feel adhesive layer 4.

[0026] In this invention, in order to meet the requirements of sun protection, heat insulation and UV protection, a composite fabric consisting of a waterproof adhesive layer 1, a 30D ultra-thin fabric layer 2, a four-layer black adhesive layer 3 and a feather-shield heat-insulating skin-feel adhesive layer 4 is applied to products such as sun umbrellas and sun-protective clothing.

[0027] This invention further provides a manufacturing process for a seven-layer composite umbrella fabric, comprising the following steps: Step 1: Substrate pretreatment: The 30D ultrathin fabric is treated with plasma to improve its surface activity; Step 2: Waterproof adhesive application: Apply waterproof adhesive evenly to the bottom layer of 30D ultra-thin fabric and allow it to dry and set. Step 3, multi-layer lamination of black glue: Four layers of black glue are formed by a four-times scraping and drying process. The drying temperature of each layer is 120-140℃ and the time is 3-5 minutes. Step 4: Preparation of Feather Shield Heat Insulation Skin-Feel Gel: Ceramic microcapsules, skin-friendly softener and polyurethane resin are mixed and formed into a uniform colloid through a high-speed dispersion mechanism; Step 5, Surface Layer Composite and Molecular Reorganization: Apply Feather Shield Heat Insulation Skin-Feel Adhesive to the surface of the black adhesive layer, and perform hot-press composite at 80-100℃. At the same time, reorganize the molecular structure through ultrasonic vibration. Step 6, Finishing: After shaping, cooling, and rolling, the finished fabric is obtained.

[0028] When in use, the seven-layer composite fabric can be cut and processed according to actual product needs (such as the size of a parasol, the style of a sun-protective clothing, etc.). Its lightweight characteristics make it easy to carry, and its efficient heat insulation and UV protection performance can provide users with comfortable protection in outdoor environments. Its skin-friendly and breathable design is suitable for long-term use, and its water-resistant properties ensure the product's lifespan.

[0029] The dimensions and shapes of all components in this structure are not specifically limited here and need to be produced according to the actual situation.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seven-layer composite umbrella fabric, comprising a waterproof adhesive layer (1), characterized in that: A 30D ultra-thin fabric layer (2) is provided above the waterproof adhesive layer (1), and four layers of black adhesive layer (3) are provided above the 30D ultra-thin fabric layer (2). A feather shield heat insulation skin-feel adhesive layer (4) is provided above the uppermost black adhesive layer (3).

2. The seven-layer composite umbrella fabric according to claim 1, characterized in that: The waterproof adhesive layer (1) is made of environmentally friendly polyurethane waterproof adhesive material with a thickness of 0.02-0.03mm.

3. The seven-layer composite umbrella fabric according to claim 1, characterized in that: The 30D ultrathin fabric layer (2) has a thickness of 0.05-0.06mm and a density of 120D*120D.

4. The seven-layer composite umbrella fabric according to claim 1, characterized in that: The thickness of the four black glue layers (3) is 0.01-0.02 mm, and they are made of nano-sized carbon black particles and polymer composites.

5. The seven-layer composite umbrella fabric according to claim 1, characterized in that: The Feather Shield heat-insulating skin-feeling adhesive layer (4) has a thickness of 0.03-0.04 mm and contains ceramic microcapsules with a particle size of 0.5-1 μm and a skin-friendly softener.

6. The seven-layer composite umbrella fabric according to claim 5, characterized in that: The skin-friendly softener is polydimethylsiloxane.

7. The seven-layer composite umbrella fabric according to claim 1, characterized in that: The waterproof adhesive layer (1), the 30D ultra-thin cloth layer (2), the four layers of black adhesive layer (3) and the feather shield heat insulation skin-feel adhesive layer (4) achieve a tight bond between the layers through molecular recombination process, and hydrogen bonds and van der Waals forces are formed between the layers.

8. The seven-layer composite umbrella fabric according to claim 1, characterized in that: The seven-layer composite umbrella fabric is suitable for sunshade umbrellas, sun-protective clothing, and other products with sun protection, heat insulation, and UV protection functions.

9. A manufacturing process for a seven-layer composite umbrella fabric, comprising the seven-layer composite umbrella fabric as described in any one of claims 1-8, characterized in that: The process includes the following steps: Step 1, Substrate Pretreatment: The 30D ultra-thin fabric is treated with plasma to improve its surface activity; Step 2, Waterproof Adhesive Coating: Waterproof adhesive is uniformly coated onto the bottom layer of the 30D ultra-thin fabric and dried to form the desired shape; Step 3, Black Adhesive Multilayer Lamination: Four layers of black adhesive are formed sequentially using a four-stage coating-drying process, with each layer dried at 120-140℃ for 3-5 minutes; Step 4, Preparation of Feather Shield Heat Insulation Skin-Friendly Adhesive: Ceramic microcapsules, skin-friendly softener, and polyurethane resin are mixed and dispersed into a uniform colloid using a high-speed dispersion mechanism; Step 5, Surface Layer Lamination and Molecular Restructuring: Feather Shield heat insulation skin-friendly adhesive is coated onto the surface of the black adhesive layer and hot-pressed at 80-100℃, while simultaneously restructuring the molecular structure through ultrasonic vibration; Step 6, Finishing: After shaping, cooling, and winding, the finished fabric is obtained.

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